Fans dressed as Harley Quinn are taking Comic-Con by storm

We're just days away from the release of "Suicide Squad" in theaters, and it seems fans can't get enough of its star: the wild-eyed, baseball-wielding Harley (Margot Robbie). We saw dozens of fans dressed as the Maid of Mischief at the convention center.

These are no laughing matter. Here are some of our favorites!

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Harley Quinn was everywhere at Comic-Con.

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Actor John Barrowman ("Doctor Who," "Arrow") hosted an award ceremony at Comic-Con and went full cosplay as a traditional Harley.

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Tara Strong, who voices Harley in animated movies and TV shows, cosplayed as her character totally undetected.

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The look created for the upcoming "Suicide Squad" movie was by far the most popular rendition we saw.

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Cosplayers carrying baseball bats had to clear them with security upon entry.